Return-fitting for vapor-heating systems.



T. G. MOUAT.

RETURN FITTING FOR VAPOR HEATING SYSTEMS.

APPLICATION FILED JUNE 15,1914.

1,112,154, Patented Sept. 29, 1914.

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UNITED sTAT-Es PATENT oFFIoE.

THOMAS G. MOUAT, OF CLEVELAND, OHIO.-

To all whom it may concern: 7

Be it known that I, THOMAS Gr. MOUAT, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Return-Fittings for Vapor-Heating Systems, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to heating systems and particularly to that type of heating systems in which steam at extremely low pres sures, usually called vapor, is conducted to radiators and there condensed and re turned to the boiler or vaporizer in the form of water. The steam is supplied to each radiator and the water of condensation is re moved therefrom in separate pipes, and in order to-reserve each pipe for the kind of fluid for which it is intended, a trap is employed. This invention particularly concerns the construction and arrangement of that trap and has for its objects an improvement in the design and arrangement of the same which shall facilitate the installation of the radiators, and which shall inhibit the freezing of the trap in cold'weather; or'in case of the freezing of the liquid in said trap shall cause the same to be thawed out very promptly upon the next use of the ra-- diator to the end that the smallest possible derangement of the system may be produced. I

Uther objects and advantages of this invention will appear as the description proceeds.

Generally speaking my invention may be defined as consisting of the combinations and constructions recited in the claims hereto annexed and illustrated in the drawings accompanying and forming a part of this application, wherein;

Figure 1 is a view inside elevation of a portion of a radiator provided with my improved trap; F ig. 2 is a vertical, sectional view taken through the center of the preferred form of one of my traps and corre sponding to the line of section indicated at 2-2 in F 3; Fig. 3 is a transverse, cross sectional view taken upon the broken line 33 in 2 and lookmg downwardly; F 1g. 4 1s a vertical, sectlonal vlew through a modified form of trap, the place of sec-' Specificationof Letters Patent. Application filed June 15, 1914.

99, the ends of the tube 17 in which is shown at 18.

RETURN-FITTING FOR VAPOR-HEATING SYSTEMS.

radiator by means of a valve4 which may beof any suitable or desirable type. The lower part of the radiator communicates with the return conduit 3 through the trap indicated generally at 5,

casing 6 and an inner tube 7 coaxial therewith and spaced therefrom so as to define an annular chamber 8 whose upper; and lower ends are closed by means of the webs 7 beingleft'open as illustrated in- Fig. 2. Adjacent to its upper end thershell 6 is provided with suitable pipe connections, hereshown; as threaded nipples 10-10 projecting horizontally in opposite directionsand adapted for attachment to'theradiator and return conduit re spectively, suitable nipplesll, IQ-being employed as in the usual manner;

Formed in each side of the chamber 8 i and connecting the inner wall of theshellG .with the outer wall of the tube 7 is a vertical septum 15 which extends from the upper end ofthe chamber to apoint adjacent its .lower end as shown'at 16 so as to define ,therebeneath" a passageway for fluid from one side of the chamber to the other.

The whole device is preferably made of cast metal, the rearward side of the shell be ing formed adjacent thebottom with a boss In the preferred construction the septa 15-15 are preferably arranged at an angle to the radius, as illustrated in Fig. EB-so as to permit a vent hole 19 to be drilled therethrough by passing a drill radially of the shell ,6, the drill hole in the shell being. thereafter closed by a plug 20 as shown in Fig. '3. With this construction the steam" pipe 2 is passed through the tube 7 when the device is installed, thus facilitating the p-ip-,

ing by permitting the pipes to be run in straight lines and with a minimum number p which may be and 3 the water return conduit.- Thesteam supply pipe is connected to the which will now be described. This trap is preferably made in; cylindrical form and consists of an outer threaded a cleanout plug as ceptible steam flow through the vent aper- I claim is of elbows and joints, and also maintaining the liquid in the trap at a proper temperature under all conditions.

In'Figs. 4 and 5 I have illustrated a modified form of my device in which the septa 15-15" are formed radially of the trap, the

vent '19 being cored or drilled out as found desirable. Also in this embodiment the upper and lower ends of the tube 7 are interiorly threaded as illustrated at QZ-so as to permit the upper and lower sections of the steam pipe to be connected directly therewith. It will be understood that in the system under consideration'the steam pressure is so low as not to cause any perture under any condition.

Even should the valve 4: be turned off for a long period of time, the steam pipe 2 will ordinarily remain suiiiciently warm to prevent freezing of the Water in the trap, even under the most severe weather and even though the radiator be set in an unused portion of the building. Furthermore, in case the water in this trap should freeze, it will immediately be thawed out upon the opening of this valve and will permit the proper ersing said chamber at each side of said inand headers at the top fee ' ner wall and extending from the closure at one end to a point adjacent to the closure at the other end, said septa being located between said inlet and outlet connections and one of the same having a vent aperture therethrough at a point adjacent the closure to which it is united.

2. In a vapor heating system, the combination, with a radiator having vertical coils and bottom of said coils, of a hollow upright cylindrical shell having an inlet and an outlet connection at its upper end, means connecting said inlet to said lower header, a return conduit con-- nected to the said outlet, an upright cylindrical tube within said shell and spaced therefrom to form an annular, chamber, integral webs connecting the upper and lower ends of said tube and shell and closing said chamber, an integral septum traversing said chamber ateach side of said innertube and extending from said upper web toa point adjacent to said lower web, said septa being located between said inlet and outlet and the lower end of the same being spaced from said lower web to form a passageway, the upper end of one of said septa being formed with a small aperture whereby substantial equality of pressure upon opposite sides thereof is secured, and a steam supply conduit connected to said upper header and passing through said inner tube.

3. In a vapor heating system, the combination, with a radiator having vertical coils and headers at the top and bottom of said coils, of a hollow upright cylindrical shell having an inlet and an outlet connection at its upper end, means connecting said inlet to said lower header, a return conduit connected to the said outlet, an upright cylindrical tube within said shell and spaced therefrom to form an annular chamber, integral webs connecting the upper and lower ends of said tube and shell and closing said chamber, an integral septum traversing said chamber at each side of said inner tube and extending from said upper web to a point adjacent to said lower web, said septa being located between said inlet and outlet and the lower end of the same being spaced from said lower web to form a passageway, the upper end of one of said septa being formed with a small aperture whereby substantial equality of pressure upon opposite sides thereof is secured, a steam conduit passing through said inner tube and connected to said upper header, and a shut off valve in said steam conduit between said tube and header.

t. A return fitting for vapor heating systems, comprising a cylindrical casting having spaced concentric walls defining an annular chamber, the ends of said chamber be ing closed and said inner wall defining the location for the steam supply, inlet and outlet connections carried by the outer wall and communicating with separated portions of said chamber, and an integral septum traversing said chamber at each side of said inner wall and extending from the closure at i one end to a point adjacent to the closure at the other end, said septa being located at an angle to the radii which they intersect and being located between said inlet and outlet connections, one of said septa being formed with a radial vent aperture at a point adjacent its top and the outer wall being formed with a plugged aperture in alinement with said vent aperture.

5. A return fitting for vapor heating systems, comprising a cylindrical shell having an inlet and an outlet connection at its upper end, a cylindrical tube within said shell and spaced therefrom to form an annular chamber, integral webs connecting the upper and lower ends of said tube and shell and closing said chamber, a rigid septum traversing said chamber at each side of said inner tube and extending from the web nearest said inlet and outlet to a point adjacent the other web and spaced therefrom to form a passageway,

In testimony whereof, I hereunto afiix my signature in the presence of two witnesses.

THOMAS G. MOUAT.

there being a second smaller passageway Witnesses: connecting the inlet and outlet sldes of said J. B. HULL, chamber adjacent to said first web. BRENNAN B. WEST.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

1 Washington, D. C. 

